Exogenous Proline and Glycine Betaine Mediated Upregulation of Antioxidant Defense and Glyoxalase Systems Provides Better Protection against Salt-Induced Oxidative Stress in Two Rice (<i>Oryza sativa</i>L.) Varieties

Hasanuzzaman, Mirza; Alam, Md. Mahabub; Rahman, Anisur; Hasanuzzaman, Hasanuzzaman; Nahar, Kamrun; Fujita, Masayuki

doi:10.1155/2014/757219

Cited by 285 publications

(223 citation statements)

References 77 publications

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“…It results in ion toxicity, osmotic and oxidative stress, nutritional imbalances, reduction of cell divisions and alterations in metabolic processes as photosynthesis, respiration, and disorganization of membranes of plants (Sen et al, 2002 andHasanuzzaman et al, 2014). Many investigators have reported the reduction of plant growth due to salinity stress.…”

Section: Introductionmentioning

confidence: 99%

Response of Salt-Stressed Wheat ( Triticum aestivum L.) to Potassium Humate Treatment and Potassium Silicate Foliar Application

et al. 2017

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T HE PRESENT study was carried out to investigate the effect of high NaCl concentrations on some growth parameters and physiological processes of wheat (Triticum aestivum L.) plant. The results indicated that Gemeza.9 was the most sensitive cultivar to high salinity levels compared to all tested wheat cultivars. Moreover, salinity stress caused a reduction in the germination percentage by 65% and all growth parameters by 21%, 25% and 60% in the lengths of shoot, root and leaf area, also by 27% and 48% in fresh weights of shoot, root and 40% and 75% in dry weights of shoot and root. It also increased the activity of antioxidant enzymes (peroxidase and catalase), lipid peroxidation and ascorbic acid content. Salinity induced increase of osmolytes compounds such as total soluble proteins, carbohydrates and amino acids. Furthermore, all measured yield parameters, the percentage of grain's maturity and productivity were highly decreased. Accordingly, the role of potassium humate and potassium silicate either sole or combined in alleviating the toxic effect of salinity was also studied. Results showed that application of potassium humate as sole had a stimulatory effect higher than potassium silicate or their combination. It increased the germinating percentage by 128% at 200mM NaCl. In addition, potassium humate and potassium silicate increased the photosynthetic activity, decreased the activity antioxidant enzymes (Peroxidase and Catalase) as well as biosynthesis of MDA and ascorbic acid also they induced increase biosynthesis of proteins and carbohydrates in yielded grains. Accordingly, our study recommends the application of potassium humate as an organic fertilizer and potassium silicate as a foliar spray for improving the quality and quantity of the sensitive wheat cultivar Gemeza.9 cultivated in salty lands and increases its productivity.

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Section: Introductionmentioning

confidence: 99%

Response of Salt-Stressed Wheat ( Triticum aestivum L.) to Potassium Humate Treatment and Potassium Silicate Foliar Application

et al. 2017

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“…Quanto a enzima de degradação, na ausência de prolina, houve uma redução na atividade da ProDH de cerca de 56% aos 7 dias (Figura 2d (Freitas, 2013) e arroz (Hasanuzzaman, et al, 2014).…”

Section: Resultsunclassified

Aspersão De Prolina Em De Plantas De Sorgo Em Condições Salinas: Metabolismo E Expressão Dos Genes Relacionados

Coelho¹,

Freitas²,

Lopes³

et al. 2017

Anais Do IV Inovagri International Meeting - 2017

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RESUMO:Estudou-se os efeitos da prolina exógena em folhas de Sorgo (genótipo CSF 20) em condições controle e de salinidade analisando dados de crescimento, a acumulação de prolina e a modulação da atividade enzimática e da expressão gênica dos genes relacionados.As plantas com 10 dias após a semeadura foram cultivadas em solução nutritiva na ausência e presença de 75 mM de NaCl e tratadas com soluções de prolina a 30 mM na ausência e presença de sal. Em nossas observações concluímos que a aspersão de prolina têm efeitos mitigadores e que os níveis de prolina são modulados pela combinação das atividades das enzimas e dos genes relacionados. Destaca-se que a expressão dos genes nos dias iniciais após a aplicação de prolina é crucial para a modulação tanto dos níveis de prolina quanto das atividades enzimáticas. PALAVRAS-CHAVE: Sorgo, salinidade, expressão gênica PROLINE SPRAYING IN SORGHUM PLANTAS UNDER SALINE CONDITIONS: METABOLISM AND GENE-RELATED EXPRESSION SUMMARY:The effects of exogenous proline in sorghum leaves (genotype CSF 20) under control and salinity conditions were studied by analyzing growth parameters, proline accumulation and modulation of the enzymatic activity and expression of related genes. Plants with 10 days after sowing were grown in nutrient solution in the absence and presence of 75 mM NaCl and treated with 30 mM proline solutions in the absence and presence of salt. We conclude that proline aspersion has mitigating effects and that proline levels are modulated by the combination of enzyme activities and related genes. It is noteworthy that the expression of genes in the early days after the application of proline is crucial for the modulation of both proline levels and enzymatic activities.

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“…This, because the salinity of soils, causing, directly or indirectly, physiological imbalances to plants (Munns, 2002). These imbalances reach most cultures for being sensitive to high concentrations of salts in the soil (Hasanuzzaman et al, 2014). Salt stress, like other environmental stresses, causes an imbalance in the appropriation of reactive oxygen species (ROS), what causes the disorderly increase of these species in the tissues of plants and can lead to severe damage to the plant (Mittler, 2002).…”

Section: Discussionmentioning

confidence: 99%

Response to in vitro salt stress in sugarcane is conditioned by concentration and condition of exposure to NaCl

Granja¹,

Medeiros²,

Silva³

et al. 2018

Acta biol. Colomb.

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Salinity is one of the major environmental stress factors that affect crop productivity, as well as interfering with plant growth and development, resulting in reduced production quality. Given this, we highlight the importance of research in response to plants subjected to salt stress in order to assess the physiological and biochemical behavior of genotypes, with the objective of selecting the more tolerant. One way to ensure the uniformity of the response of the plants is through in vitro cultivation, which allows control of the cultivation conditions. Therefore, the objective of this work was to evaluate the response of two commercial varieties of sugar cane exposed to saline stress in different conditions (gradual and abrupt). Two varieties of sugarcane (RB931011 and RB872552) were subjected to in vitro salt stress by NaCl (56 mM and 112 mM), either gradually or suddenly. The responses of the enzymatic antioxidant system (catalase, peroxidases and ascorbate peroxidase) and free proline, as well as the Na + and K + contents, were assessed 30 days after the beginning of the treatments. Differences were observed in the responses of the varieties as a function of the induction mode of salt stress, graded or by shock, rather than as a function of the NaCl concentrations in the culture medium. The stress response is therefore conditioned not only by salt concentration, but also by the form of exposure to salt.Keywords: antioxidant enzymes, in vitro culture, oxidative stress, salinity. RESUMENLa salinidad es uno de los principales factores de estrés ambiental, además de interferir en el crecimiento de las plantas perjudica directamente la producción agrícola. En ese contexto, se destaca la importancia de investigaciones direccionadas a la respuesta de las plantas sometidas al estrés salino, con el fin de evaluar el comportamiento fisiológico y bioquímico con el objetivo de seleccionar genotipos tolerantes a dicha condición. Una de las técnicas más utilizadas para uniformizar la respuesta de las plantas a una condición en particular es el cultivo de tejidos in vitro. Por lo tanto, el objetivo de este estudio fue evaluar la respuesta de dos variedades comerciales de caña de azúcar (RB931011 e RB872552) expuestas a estrés salino con NaCl (56 mM e 112 mM) en diferentes condiciones, gradual y abrupta. Las respuestas del sistema antioxidante enzimático (catalasa, peroxidasa y ascorbato peroxidasa) y prolina libre, asi como las concentraciones de Na + e K + fueron evaluadas 30 días después del inicio de los tratamientos. Fueron observadas diferencias en la respuesta de las variedades en función del modo de inducción del estrés salino, graduado o abrupto, y no solo en función de las concentraciones de NaCl en el medio de cultivo. La respuesta al estrés es condicionada no solo por la concentración de sal sino también por la forma de exposición al medio salino.Palabras clave: cultivo in vitro, enzimas antioxidantes, estrés oxidativo, salinidad.

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Exogenous Proline and Glycine Betaine Mediated Upregulation of Antioxidant Defense and Glyoxalase Systems Provides Better Protection against Salt-Induced Oxidative Stress in Two Rice (Oryza sativaL.) Varieties

Cited by 285 publications

References 77 publications

Response of Salt-Stressed Wheat ( Triticum aestivum L.) to Potassium Humate Treatment and Potassium Silicate Foliar Application

Response of Salt-Stressed Wheat ( Triticum aestivum L.) to Potassium Humate Treatment and Potassium Silicate Foliar Application

Aspersão De Prolina Em De Plantas De Sorgo Em Condições Salinas: Metabolismo E Expressão Dos Genes Relacionados

Response to in vitro salt stress in sugarcane is conditioned by concentration and condition of exposure to NaCl

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